Sex Partner With No Zika Symptoms Transmits Virus: CDC

FRIDAY, Aug. 26, 2016 (HealthDay News) -- U.S. health officials report that the Zika virus can be spread sexually even when a partner shows no signs of infection.

 FDA Recommends All Blood Donations Be Tested for Zika

FRIDAY, Aug. 26, 2016 (HealthDay News) -- The U.S. Food and Drug Administration recommended on Friday that the nation's entire blood supply be routinely screened for the Zika virus.

 First Days of Preseason Practice Pose Big Heat Risks for College Football Players

FRIDAY, Aug. 26, 2016 (HealthDay News) -- As college football players trade in their beach towels for helmets and padding, new research shows their risk of developing sports-related heat illness shoots up.

 Health Highlights: Aug. 26, 2016

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

 Even a Little Exercise May Help Stave Off Dementia

FRIDAY, Aug. 26, 2016 (HealthDay News) -- Couch potatoes have a higher risk of developing dementia in old age, a new study reports.

 Early Virus Raises Asthma Risk in Certain Kids: Study

FRIDAY, Aug. 26, 2016 (HealthDay News) -- A common genetic variation significantly boosts the odds of asthma in children who've had a severe respiratory illness at a young age, researchers report.

 Hopes Dashed for Rare Bone Cancer Treatment

FRIDAY, Aug. 26, 2016 (HealthDay News) -- Adding extra drugs to chemotherapy doesn't benefit patients with a rare type of bone cancer, according to a new study.

 Doctors Divided on Safety, Use of Electronic Cigarettes

FRIDAY, Aug. 26, 2016 (HealthDay News) -- Doctors disagree on the best way to answer patients' questions about electronic cigarettes, a new study finds.

 More Americans Can Afford Medications Under Obamacare: Study

FRIDAY, Aug. 26, 2016 (HealthDay News) -- Though a growing number of Americans are able to afford prescription medications, millions still have difficulty, a new study finds.

 Health Tip: Keeping Foods Separate During Grilling

(HealthDay News) -- It's important to prevent cross-contamination of food while grilling.

 Health Tip: Make Sure Kids' Shoes Fit Well

(HealthDay News) -- Kids need sturdy, supportive shoes that fit their growing feet.

Yesterday

 Many Teens 'Vaping' for Flavor, Not Nicotine

THURSDAY, Aug. 25, 2016 (HealthDay News) -- Why are American teens tempted to try an e-cigarette? A new study suggests most are interested in the vaping product's flavoring, not nicotine.

 Synthetic Fentanyl Fueling Surge in Overdose Deaths: CDC

THURSDAY, Aug. 25, 2016 (HealthDay News) -- Deaths from overdoses of the synthetic narcotic fentanyl have surged in recent years, U.S. health officials say in a troubling new report.

 'Pretend Mommy' Program Doesn't Deter Teen Pregnancy

THURSDAY, Aug. 25, 2016 (HealthDay News) -- Teens are more, not less, likely to become pregnant if they take part in prevention programs that use lifelike robot babies to demonstrate the realities of motherhood, a new trial shows.

 Amphetamines Polluting Some Urban Streams: Study

THURSDAY, Aug. 25, 2016 (HealthDay News) -- Medications and illegal drugs are polluting streams in and around at least one major U.S. city, new research reveals.

 Autism-Linked Genes Often Differ Between Siblings

THURSDAY, Aug. 25, 2016 (HealthDay News) -- In families that have more than one child with autism, the gene variations underlying each child's disorder often differ, new research shows.

 For Uncontrolled Tremor, Ultrasound Instead of Brain Surgery?

THURSDAY, Aug. 25, 2016 (HealthDay News) -- Patients with uncontrolled shaking caused by a condition called essential tremor may get relief with a new noninvasive ultrasound procedure, a study finds.